Kane Schimmel
Dec 13, 2024
Formulas for cations and anions?
What are the chemical formulas for the following cations and anions: 1) Vanadium in the +5 oxidation state combined with carbonate (V^5+CO3^2-), and 2) Vanadium in the +4 oxidation state combined with iodide (VO^2+I^-) ?
3 Answers
V5+ and CO3 2-
The smallest common multiple between 5 and -2 is 10.
2 x V+5 = +10
5 x CO3 2- = -10
The + and – charges in a compound must balance. So the formula is V2(CO3)5, called vanadium(V) carbonate.
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VO2+ and IO-
The VO ion has a 2+ charge, so we need TWO IO- ions to balance it out with -2.
The formula is VO(IO)2, called vanadyl hypoiodite.
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Mn3+ and HSO4- (not H2SO4-)!
Mn is +3 so I need a -3 to balance it out. That’s three HSO4- (3 x -1 = -3). The formula is Mn(HSO4)3, called manganese(III) hydrogen sulfate or manganese(III) bisulfate.
Feb 01, 2025
Just balance the charges:
V(5+)CO3(2-) becomes V2(CO3)5
Mn(3+)H2SO4(-) becomes Mn(H2SO4)3
Feb 12, 2025
NH4Cl (which is composed of NH4+ polyatomic cation and Cl- anion) = ammonium chloride
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